Is there a way to set a Model's Orientation through a script?

My script does change the Model's orientation but it seems that once you click the button that activates the event it changes the orientation again, What I actually want it to do is, Set the orientation at a certain amount instead of increasing it by 20 every time I click it. I want it to stay at 20 if you understand what I mean.

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local createPartEvent = ReplicatedStorage.BEDEVENTS2:WaitForChild("BedMovePos2")



local function onCreatePartFired(player)
do
if player:findFirstChild("leaderstats") then
		print "hey"
			local housetag = game.Workspace.PickSpawn[""..player.Name..""]
			local playerhouse = game.Workspace.PickSpawn:FindFirstChild(""..housetag.value.."")
			
			
			local cframe= CFrame.new(playerhouse.Spawn.Bed.PrimaryPart.Position)
			playerhouse.Spawn.Bed.PrimaryPart.Orientation = Vector3.new(0,20,0)
			playerhouse.Spawn.Bed:SetPrimaryPartCFrame(cframe * CFrame.new(0, math.rad(0), 0))

			
		




end
end
end


createPartEvent.OnServerEvent:Connect(onCreatePartFired)